Gurgaon City is a satellite town of NCT Delhi and is an important center of trade and commerce in Haryana State. The town has a number of mnc’s and mechanical, electrical, textile, electroplating, chemical industries. The rapid urbanization and population growth has resulted in the expansion of city boundaries. To meet with the requirements of the residents over exploitation of resources is done. In this study we deal with the change in hydrological profile. Ground water decline and salinity is the major problem in the district. Ground water is declining at a rate with the range of 0.77m/yr to (Bilaspur) to 1.2 m/yr ( Haily Mandi). Perusal of the Estimates reveals overall stage of ground water development in the block is of the order of 209% which has exceeded the available recharge and thus the whole district has been categorized as over exploited. Net annual ground water availability of the district is 20215.12 ham and existing gross ground water draft for all users is 33055.33 ham. It means that the ground water is under stress and the ground water level is declining. There is no scope for further ground water development. Only measures should be taken to reduce on the dependence on ground water and to enhance the ground water resources.